Saw-gaging tool.



J. MORIN.

SAW GAGING TOOL.

APPLICATION HLBD JAN. 3, 1912-.

1 060,203 Patented Apr. 29, 1913.

2 A? 4 A9 2 m f I U WIT i.

JOSEPH MORIN, OF SEATTLE, WASHINGTON.

SAW-GAGING TOOL.

Specification of Letters Patent.

Patented Apr. 29, 1913.

Application filed January 3, 1912. Serial No. 669,198.

,To all whom it may concern:

Be it known that I, JOSEPH MORIN, a citi- Zen of the United States, residing at Seattle, in the county of King and State of WVashington, have invented certain new and useful Improvements in Saw-Gaging Tools, of which the following is a specification.

This invention relates to gages such as are employed in saw-sharpening operations.

With the gaging devices at present in use, an adjustable pin is usually employed for regulating the heights of the points of the raker teeth but, as the sawyer desires the point of each tooth nearest the adjacent ends of the saw to be somewhat longer than the other points, it is necessary under the circumstances to adjust the gaging pin for the longer points and, after such points have been swaged to proper heights as determined by the pin, to adjust the latter for gaging the shorter points of the teeth. In consequence of the time required in the operations of changing the raker-tooth gagingpin and in getting it bacl again when needed, it has been considered necessary to avoid such double adjustments, as far as possible, by the provision of devices which enable the gage to be set to a predetermined standard suitable for the raker teeth of successive saws, as usually presented to the saw filer of a logging camp.

\Vith these ends in" view, the invention consists in the novel construction and combination of parts, as will be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a front elevation, and Fig. 2 is a rear elevation of a saw tool embodying the present invention. Fig. 3 is a top plan view of the same. Fig. 4 is a cross sectional View taken through 44 of Figs. 1 and 2.

The frame of the tool, which may be constructed of cast metal, comprises an upright plate, or web, 5 having intermediate its height and at the front and back horizontal protruding ridges 6 and 7 Provided at the upper edge of said web are forwardly prot-ruding lugs 8 and 8 while at its lower edge it is formed with similarly directed lugs 9 and 9. Secured to the top faces of the lugs 9 and 9 as by screws 10 and 10 are strips 11, and secured above the latter and bridging the gap therebetween is a filing-plate 12 provided with a longitudinal slot 13 whose inner edge 13 is in the same plane or nearly so with the outer edges 6 of the frame ridges 6. The filing plate 12 is secured in place by the screws 10 passing through apertures adjacent the ends thereof and by interposing shim pieces 14 of different thicknesses under its ends, the plate is arranged to have its under face 12 in a plane inclined to the plane of the upper faces 11 of the referred to strips 11.

Secured to the upper faces of the lugs 8 and 8 at the top of the frame is a plate 15 extending beyond the frame ends and of a width to project outside of the plane of the ridge edges 7 at the rear of the frame and in the same plane with the outer edges 6 of the ridges at the front. Medially of its length the plate 15 is provided at its rear with a recess 16.

18 and 19 are the gage devices for regulating the points of the raker-teeth and are respectively constituted of inverted U- shaped members having downwardly directed arms 18, 18 and 19, 19 which extend through apertures provided in the plate 15. The apertures 21 and 20 for the arms 18 and 19 are positioned so that such arms will be located in proximity to the rear face of the frame web 5 and also be close to the recess 16 of the plate 15. The other apertures in the plate register with holes provided in the frame lugs 8. The member arms 18 and 19 extend therethrough and are screw-threaded to accommodate nuts 22 v and 22 for each member above the plate 15 and below the lugs 8, as shown.

The operation of the invention is as follows: After the teeth of a saw, indicated by broken lines in Fig. 2, are jointed by the use of a file held to a selected curvature by means of a screw 24, as customary, the points I? and P of a raker tooth It are swaged to hook the ends thereof and bring same to their proper relative heights. These heights according to the best. practice, are such that the point P next to the adjacent end of the saw is the greater. To test the same, the saw tool is placed against the side of the saw blade and is supported by the cutting teeth C bearing against the under face 15 of the plate. WVhen thus supported the tool is moved endwise of the saw so that the gage arm 18 will be directly above the higher point P of a raker tooth and the gage arm 19 above the shorter point P. If the points are of suitable heights, then said gage arms will contact with points of a raker tooth while the cutting teeth contact with the plate 15. If such a condition does not prevail then the raker tooth points must be either re-swaged or brought to proper heights by filing same which is effected by reversing the tool and inserting the raker tooth through slot 18 of filing plate 12 and cutting the tooth points down until the cutting teeth contact with the strips 11. The adjustment of the gage devices 18 and 19 are readily accomplished by loosening or tightening the nuts 22 and 22 to raise or lower the devices to protrude the gaging arms 18 and 19 to suitable distances below the under face of plate 15.

It is to be noted that the raker teeth of saws of this description are usually provided with two separate points and that devices heretofore devised for gaging such saws have been confined to arrangements for gaging one of said points independently of the other. It is also to be noted that the present device provides for gaging both points whereby rocking of the saw in the gage is eliminated, or if such rocking be present, an indication is afforded of uneven heights in the points of the raker tooth be ing gaged.

What I claim, is

1. In a saw tool of the class described, the combination with the frame having a plate at the upper edge thereof, of a gage device comprising a Ushaped member having the arms extend through holes provided in the plate, one of said arms being employed as a gage for the point of a raker-tooth and Copies of this patent may be obtained for five cents each, by addressing the the other arm being screw threaded, nuts engaging said screw threads and operative above and below said plate for securing the gage at predetermined adjusted positions whereby the separate point-s of the raker teeth of a saw may be gaged.

2. In a saw tool of the class described, the combination with the frame provided with lugs at its upper edge and a plate secured to said lugs and having a centrally disposed recess at one side of the plate, of a pair of spaced gage devices extending through said plate in proximity to the recess thereof, and means whereby said gage devices may be adjustably secured to present ends of the same at selected distances below the plate whereby the separate points of the raker teeth of a saw may be gaged.

8. In a saw too-l of the class described, the combination with the frame having a plate extending at right angles from the upper edge thereof, of a pair of adjustable gaging devices extending below the under face of said plate whereby the points of a raker tooth may be coincidentally gaged to different heights when the cutting teeth of a saw is juxtaposed with the underside of the plate. 1

Signed at Seattle, this 13th day of December 1911.

JOSEPH MORIN.

Witnesses PIERRE BARNES, E. PETERSON.

Commissioner of Patents,

Washington, D. C. 

